diff --git a/src/pages/demo/index.html b/src/pages/demo/index.html
index e767139..ad569f5 100644
--- a/src/pages/demo/index.html
+++ b/src/pages/demo/index.html
@@ -75,7 +75,7 @@
<main>
<a href="/demo/about">{{ count }}</a>
<div>
- <my-hello-world name="{{name }}"></my-hello-world>
+ <my-hello-world data-name="{{name }}"></my-hello-world>
</div>
<p>some text: {{greeting}}</p>
{{greeting}} hey<br />